ASME SA213 TP347H Seamless Tube Austenitic Stainless Steel Heat Exchanger & Boiler Tube
Price:
Negotiable
MOQ:
100KGS
Delivery Time:
Depends on quantity
Brand:
YUHONG
Product Description
ASME SA213 TP347H Seamless Tube Austenitic Stainless Steel Heat Exchanger & Boiler Tube
High-Temperature & Corrosion-Resistant Tubing for Critical Applications
ASTM A213 TP347H is a seamless, austenitic stainless steel tube specifically engineered for high-temperature service in demanding environments. Designated as a heat-resistant grade (indicated by the "H"), it delivers superior creep-rupture strength compared to its non-H counterparts, making it a reliable choice for pressure-bound applications.
This grade belongs to the niobium-stabilized Cr-Ni austenitic family. The addition of niobium (Nb) significantly enhances its resistance to intergranular corrosion, particularly in environments containing acids, alkalis, and salts. It offers better high-temperature strength and oxidation resistance than standard Type 316 stainless steel.
Primary Standards & Specifications
- Governing Standard: ASTM A213/A213M - Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
- Common Size Range: Outside diameter from 3.2 mm (1/8 in) to 127 mm (5 in) with minimum wall thickness ranging from 0.4 mm to 12.7 mm
- Manufacturing Process: Seamless, available in hot-finished or cold-finished conditions
Material & Chemical Composition
TP347H is a high-carbon, niobium-stabilized austenitic stainless steel. The chemical composition ensures stability and strength under thermal stress.
| Element | Composition Range (%) | Key Function |
|---|---|---|
| Carbon (C) | 0.04 - 0.10 | Enhances high-temperature strength |
| Manganese (Mn) | ≤ 2.00 | Improves hot ductility and strength |
| Silicon (Si) | ≤ 1.00 | Deoxidizer that improves oxidation resistance |
| Phosphorus (P) | ≤ 0.045 | Impurity element, controlled to low levels |
| Sulfur (S) | ≤ 0.030 | Impurity element, controlled to low levels |
| Chromium (Cr) | 17.00 - 19.00 | Provides fundamental corrosion and oxidation resistance |
| Nickel (Ni) | 9.00 - 13.00 | Stabilizes the austenitic structure and improves toughness |
| Niobium (Nb) | 0.80 - 1.00 (or 8xC min) | Critical Element. Forms stable carbides to prevent chromium depletion at grain boundaries, granting exceptional resistance to intergranular corrosion |
Mechanical & Physical Properties
TP347H offers a robust combination of strength, ductility, and stability for high-temperature operations.
| Property | Standard Requirement |
|---|---|
| Tensile Strength | ≥ 515 MPa (75 ksi) |
| Yield Strength (0.2% Offset) | ≥ 205 MPa (30 ksi) |
| Elongation (A5) | ≥ 35% |
| Hardness (Brinell) | ≤ 192 HB |
Main Application Scenarios
Thanks to its high-temperature strength, oxidation resistance, and corrosion stability, ASTM A213 TP347H tubes are the material of choice for critical components in several heavy industries:
- Power Generation: Superheater and reheater tubes, main steam lines, and high-pressure boiler tubing in fossil fuel and thermal power plants
- Petrochemical & Chemical Processing: Heat exchanger tubes, reactor internals, and piping systems that handle corrosive media at elevated temperatures
- Oil & Gas Refining: Tubing for refinery heaters, heat recovery systems, and other high-temperature processing units
- Other Industries: Also finds application in synthetic fiber, food, and paper industries where similar corrosion and temperature challenges exist
Similar Products
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Yuhong Group Co.,Ltd
Location
20TH FLOOR,NO.1 NEW WORLD BUILDING ,NO.1018 MINAN ROAD,YINZHOU DISTRICT, NINGBO CITY, ZHEJIANG PROVINCE, CHINA
Contact Person
Jikin Cai